I also am confused why post this, then say 'If you don't drink either at all, no need to post please.' - it almost sounds like data gathering....! 
Badguider is spot on - there is no 'safe' limit with alcohol - it is a toxin. There are lots of new studies coming out about the effects of alcohol on foetuses. Change - both my sister and BIL are doctors, and the alcohol guidelines are nothing to do with stupid people not sticking to it - they know now that occasionally the alcohol effects the developing foetus in an adverse way, and you are welcome to google the latest research on the topic. This is why they now say - none is 'safe'. You could be really unlucky and drink at a critical point, and then have an issues later - since alcohol crosses the placenta. If you 'must' then very little - say the guidelines. People used to smoke when pg too not that long ago. They can't do loads of research truly into it either. here:-
'If women want to avoid all possible alcohol-related risks, they should not drink alcohol during pregnancy because the evidence on this is limited.'
re. caffeine. The risk actually is to do with the babies birth weight. Now being sensible about caffeine - and having a couple of cups of tea (not buiklders strength) etc is fine they think - just don't go knocking back loads of the stuff. But you never know this may also change. I personally hate coffee now, and have the odd cup of normal tea, but mainly caffeine free tea.
Personally I drink - it is nine months, why on earth is it that hard to just not have a drink.
here is some more food for thought - and I live in germany and they are also very against it here now, based on new research, and it really is actively discouraged. And no - I do not think for a moment they are trying to 'control' me - just protect me and my baby from future complications.
www.nhs.uk/chq/Pages/2270.aspx?CategoryID=54
How does alcohol affect my unborn baby?
If you drink alcohol when you?re pregnant, the alcohol crosses the placenta into the bloodstream of the unborn baby and could interfere with how it grows and develops. In the absence of its own blood filtering system, the foetus is unprotected from any alcohol molecules that cross from the mother?s blood.
Alcohol can cause damage to an unborn baby at all stages of pregnancy. Drinking during pregnancy has been associated with:
miscarriage (over 9,000 women are admitted to hospital every year for miscarriages caused by alcohol [NHS Information Centre Hospital Admission data])
low birth weight
heart defects
learning and behavioural disorders